One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,5)(6,8)(11,15)(14,16)(17,18,22,23)(19,20,24,28)(21,29,30,25)(26,32,31,27)(2,5)(6,7)(9,10,13,12)(11,14,15,16)(18,23)(19,24)(21,30)(27,32)(9,11,13,15)(10,14,12,16)(17,19)(18,20)(21,26)(22,24)(23,28)(25,27)(29,32)(30,31)(1,2)(3,6)(4,5)(7,8)(17,20)(18,24)(19,23)(21,27)(22,28)(25,31)(26,29)(30,32) involution — undirected(1,3,4,8)(2,6,5,7)(9,12,13,10)(11,16,15,14)(17,21,22,30)(18,25,23,29)(19,26,24,31)(20,27,28,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.